* WHAT...Heat index values up to 103.
* WHERE...Portions of east central, south central, and southeast
Wisconsin.
* WHEN...Until 8 PM CDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
Heat Advisory
Until 2026-07-15T08:00:00-05:00
•
National Weather Service
* WHAT...Heat index values up to 103.
* WHERE...Portions of east central, south central, and southeast
Wisconsin.
* WHEN...Until 8 PM CDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PECATONICA RIVER AT MARTINTOWN, WI
Realtime Data
•
Report
•
Conditions
827
Discharge (cfs)
6.4
Gauge Height (ft)
Streamflow discharge was last observed at 827 cfs, and a gauge height of 6.37 feet.
With the
% decrease since yesterday,
the streamflow average over the past 10 days is 1,011 .
Weather today, Tomorrow,
The river has several small tributaries and two dams located downstream. Summer and fall months typically have lower flows, while winter and spring have higher flows due to snowmelt and precipitation. Interestingly, the Pecatonica River was once contaminated with PCBs from a nearby landfill, leading to a Superfund cleanup site. Today, the river has been restored and is home to a variety of fish and wildlife species.
July 15, 2026
Elevation
804.0 ft
Last Updated
Gage height, ft
6.37 ft
Precipitation, total, in
0.0 in
Stream water level elevation above NAVD 1988, in ft